IPFW

IPFW is available for BSD systems. It replaces the inline version available in pre-2.9 versions built with this:

    ./configure --enable-ipfw / -DGIDS -DIPFW

This command line argument is no longer supported:

    ./snort -J <port#>

Instead, start Snort like this:

    ./snort --daq ipfw [--daq-var port=<port>]

    <port> ::= 1..65535; default is 8000

* IPFW only supports ip4 traffic.